File:Ssn yearly.jpg
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Size of this preview: 800 × 253 pixels. Other resolutions: 320 × 101 pixels | 906 × 286 pixels.
Original file (906 × 286 pixels, file size: 27 KB, MIME type: image/jpeg)
400 year sunspot history, measured with Wolfer numbers.
- 1790 to 1820: Dalton Minimum
- 1645 to 1715: Maunder Minimum
Source: http://science.nasa.gov/ssl/pad/solar/images/ssn_yearly.jpg
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |
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Original upload log[edit]
The original description page was here. All following user names refer to en.wikipedia.
- 2005-02-04 20:27 Bhamer 906×286× (27604 bytes) {{PD-USGov-NASA}}
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:16, 28 September 2012 | | 906 × 286 (27 KB) | OgreBot (talk | contribs) | (BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2005-02-04 20:27:29 by Bhamer |
| 07:52, 16 May 2005 |  | 800 × 253 (27 KB) | Xgarciaf~commonswiki (talk | contribs) | 400 year sunspot history, measured with Wolfer numbers. * 1790 to 1820: Dalton Minimum * 1645 to 1715: Maunder Minimum ---- Source: http://science.nasa.gov/ssl/pad/solar/images/ssn_yearly.jpg {{PD-USGov-NASA}} |
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